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High-branching-degree water-based saturated polyester modified acrylic resin, preparation method thereof and water-based gloss oil for metal

A technology of water-based polyester resin and acrylic resin, which is applied in the direction of coating, etc., can solve the problems of inability to produce high-branched modified resin, insufficient retort resistance and wear resistance, etc., achieve excellent chemical resistance, improve Eco-friendly effect

Pending Publication Date: 2021-11-05
清远慧谷新材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing outer varnish for pop cans has deficiencies in cooking resistance and wear resistance, especially in high temperature cooking (such as cooking at 121 ° C)
[0003] Chinese patent CN 108587382 A discloses a water-based varnish for metals and its preparation method. The polyester-modified water-based acrylic resin mentioned in the cooking-resistant varnish cannot obtain highly branched acrylic resins by means of solution free radical graft polymerization. degree of modified resin
[0004] Chinese patent CN 106749945 A discloses a method for preparing polyester-modified water-based acrylic resin. The resin is also grafted and polymerized by solution free radicals. Since linear polyester is used, it is impossible to obtain a modified resin with a high degree of branching.

Method used

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  • High-branching-degree water-based saturated polyester modified acrylic resin, preparation method thereof and water-based gloss oil for metal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Put 45.5g of neopentyl glycol, 20.7g of trimethylolpropane, 86.2g of isophthalic acid, 25.2g of adipic acid, and 16.3g of 2-methyl-1,3-propanediol into the reaction flask; raise the temperature to 140°C and keep it warm to 1 hour; 2 hours to raise the temperature of the material to 180 for reaction, and keep it for 2 hours; within 3 hours, raise the temperature to 230±3°C and keep it for 3 hours, start sampling and test until the acid value is ≤10; cool down to 170°C, add 6.0g of trimellitic anhydride, keep it for 1h, Start sampling to test the acid value, and the acid value is 25 as the reaction end point; cool down to 150°C, add 19.3g of ethylene glycol monobutyl ether to dilute; continue to cool down to 70°C. Then add 40 g of methyl methacrylate, 50 g of styrene, 20 g of butyl methacrylate, 40 g of n-butyl acrylate, 10 g of isooctyl acrylate, and 20 g of hydroxyethyl methacrylate, and stir for 30 minutes. Add 2.8g of N,N-dimethylethanolamine and stir for 20min. Cont...

Embodiment 2

[0058] Put 54.8g of neopentyl glycol, 52.8g of tris(2-hydroxyethyl)isocyanurate (THEIC), 35.2g of isophthalic acid, and 50.9g of adipic acid into the reaction flask; 1 hour; within 2 hours, raise the temperature of the material to 180°C for reaction, and keep it for 2 hours; within 3 hours, raise the temperature to 230±3°C and keep it for 3 hours, start sampling and test until the acid value is ≤10; cool down to 170°C, add 6.3g of trimellitic anhydride, hold it for 1h, start Sampling was taken to test the acid value, and the acid value was 25 as the reaction end point; the temperature was lowered to 150°C, and 19.3g of ethylene glycol monobutyl ether was added to dilute; the temperature was further lowered to 70°C. Then add 30g of methyl methacrylate, 40g of styrene, 40g of butyl methacrylate, 40g of n-butyl acrylate, 10g of lauryl methacrylate, 20g of hydroxypropyl acrylate, and stir for 30min. Add 2.9 g of N,N-dimethylethanolamine and stir for 20 min. Control the temperatur...

Embodiment 3

[0061] Put 56.7g of neopentyl glycol, 28.7g of trimethylolpropane, 43.1g of isophthalic acid, and 47.9g of adipic acid into the reaction bottle; raise the temperature to 140°C and keep it warm for 1 hour; raise the temperature of the material to 180°C in 2 hours Reaction, keep warm for 2 hours; within 3 hours, heat up to 230±3°C and keep warm for 3 hours, start sampling and testing until the acid value is ≤10; cool down to 170°C, add 13.6g of trimellitic anhydride, keep warm for 1h, start sampling and testing the acid value, the acid value is 45 for the reaction End point; cool down to 150°C, add 20g of ethylene glycol monobutyl ether to dilute; continue to cool down to 70°C. Then add 50 g of methyl methacrylate, 15 g of styrene, 20 g of butyl methacrylate, 25 g of cyclohexyl methacrylate, 40 g of n-butyl acrylate, 10 g of isooctyl acrylate, and 20 g of hydroxypropyl acrylate, and stir for 30 minutes. Add 5.3 g of N-methylethanolamine and stir for 20 min. Control the temperat...

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Abstract

The invention discloses a high-branching-degree water-based saturated polyester modified acrylic resin which is characterized by comprising the following components in parts by mass: 100 parts of water-based polyester resin, 80-95 parts of acrylate monomer, 6-15 parts of cosolvent, 1-2 parts of neutralizer, 0.8-1.2 parts of initiator and a proper amount of deionized water, wherein the water-based polyester resin is obtained by carrying out high-temperature esterification dehydration on polyol and organic acid and / or anhydride, and the acrylate monomer consists of a hard monomer, a soft monomer and a hydroxyl-containing acrylic monomer. According to the method, the characteristics that a large amount of solvent is used and control is not easy in oil free radical graft polymerization are avoided, the modified resin with high branching degree and high cross-linking point can be simply prepared, and the prepared product has excellent chemical resistance, wear resistance and high-temperature cooking resistance.

Description

technical field [0001] The invention belongs to the technical field of polyester-modified acrylic resins, and in particular relates to the preparation of a high-branched water-based saturated polyester-modified acrylic resin and its application in retort-resistant water-based varnishes. Background technique [0002] Pop-top cans are currently widely used physical containers, and the surface varnish is required to have good chemical stability and wear resistance during production, storage, and transportation. In the production process of some pop-top cans, it is also necessary to cook and sterilize the contents of the pop-top cans, and the varnish on the outside of the pop-top cans is required to have the characteristics of cooking resistance. However, the existing varnishes for outer cans of pop-top cans have deficiencies in cooking resistance and abrasion resistance, especially in high-temperature cooking (such as cooking at 121° C.). [0003] Chinese patent CN 108587382 A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/02C08F220/14C08F212/08C08F220/18C08F220/20C09D151/08
CPCC08F283/02C09D151/08C08F220/14C08F212/08C08F220/1804C08F220/1808C08F220/20C08F2500/26C08F220/1812C08F220/1806
Inventor 钟俊文朱经纬黄光燕
Owner 清远慧谷新材料技术有限公司
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